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MDEV-21603 Crashing SHOW TABLES with derived table in WHERE condition

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When you only need view structure, don't call handle_derived with
DT_CREATE and rely on its internal hackish check to skip DT_CREATE.
Because handle_derived is called from many different places,
and this internal hackish check is indiscriminative.

Instead, just don't ask handle_derived to do DT_CREATE
if you don't want it to do DT_CREATE.
This commit is contained in:
Sergei Golubchik
2021-05-03 23:26:30 +02:00
committed by Oleksandr Byelkin
parent 72fa9dabad
commit a20195bba5
7 changed files with 67 additions and 23 deletions
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4
sql/sql_class.h
View File

@ -3469,10 +3469,6 @@ public:
{
return server_status & SERVER_STATUS_IN_TRANS;
}
inline bool fill_derived_tables()
{
return !stmt_arena->is_stmt_prepare() && !lex->only_view_structure();
}
inline bool fill_information_schema_tables()
{
return !stmt_arena->is_stmt_prepare();